// Picture.h: interface for the CPicture class.////////////////////////////////////////////////////////////////////////#if !defined(AFX_PICTURE_H__FEEDAFE6_6A51_42FA_B769_0E9742D6E16F__INCLUDED_)#define AFX_PICTURE_H__FEEDAFE6_6A51_42FA_B769_0E9742D6E16F__INCLUDED_#if _MSC_VER > 1000#pragma once#endif // _MSC_VER > 1000#include <afxctl.h>class CPicture : public CPictureHolder{public:CPicture();virtual ~CPicture();BOOL Load(CString sFilePathName);//从文件读取图像BOOL Load(HINSTANCE hInstance,LPCTSTR lpszResourceName, LPCSTR ResourceType);//从资源读取图像BOOL LoadPictureData(BYTE* pBuffer, int nSize);//从内存读取图像BOOL SaveAsBitmap(CString sFilePathName);//写入到BMP文件// 在给定的DC上画图，void Render(CDC* pDC,LPRECT pDrawRect,//目标矩形，单位是逻辑坐标单位LPRECT pSrcRect = NULL,//来源矩形，单位是0.01毫米,如果为空，则拉伸整个图像到目标矩形LPCRECT prcWBounds = NULL);//图元文件专用，绑定矩形void UnloadPicture();//释放图像，作用同CPictureHolder::~CPictureHolder()public:LONG get_Height(); // 以0.01毫米为单位的图像高度LONG get_Width(); // 以0.01毫米为单位的图像宽度};#endif // !defined(AFX_PICTURE_H__FEEDAFE6_6A51_42FA_B769_0E9742D6E16F__INCLUDED_)// Picture.cpp: implementation of the CPicture class.////////////////////////////////////////////////////////////////////////#include "stdafx.h"#include "autoupdate.h"#include "Picture.h"#ifdef _DEBUG#undef THIS_FILEstatic char THIS_FILE[]=__FILE__;#define new DEBUG_NEW#endif//////////////////////////////////////////////////////////////////////// Construction/Destruction//////////////////////////////////////////////////////////////////////CPicture::CPicture(){}CPicture::~CPicture(){}//-----------------------------------------------------------------------------// Does: Free The Allocated Memory That Holdes The IPicture Interface Data// ~~~~ And Clear Picture Information//// Note: This Might Also Be Useful If U Only Need To Show The Picture Once// ~~~~~ Or If U Copy The Picture To The Device Context, So It Can Still// Remain On Screen - But IPicture Data Is Not Needed No More////-----------------------------------------------------------------------------void CPicture::UnloadPicture()//============================================================================={if(m_pPict != NULL){m_pPict->Release();m_pPict = NULL;}}//-----------------------------------------------------------------------------// Does: Open a Resource And Load It Into IPicture (Interface)// ~~~~ (.BMP .DIB .EMF .GIF .ICO .JPG .WMF)//// Note: When Adding a Bitmap Resource It Would Automatically Show On "Bitmap"// ~~~~ This NOT Good Coz We Need To Load It From a Custom Resource "BMP"// To Add a Custom Rresource: Import Resource -> Open As -> Custom// (Both .BMP And .DIB Should Be Found Under "BMP")//// InPut: ResourceName - As a UINT Defined (Example: IDR_PICTURE_RESOURCE)// ~~~~~ ResourceType - Type Name (Example: "JPG")//// OutPut: TRUE If Succeeded...// ~~~~~~//-----------------------------------------------------------------------------BOOL CPicture::Load(HINSTANCE hInstance,LPCTSTR lpszResourceName, LPCSTR ResourceType)//============================================================================={HGLOBAL hGlobal = NULL;HRSRC hSource = NULL;LPVOID lpVoid = NULL;int nSize = 0;BOOL bResult=FALSE;if(m_pPict != NULL) UnloadPicture(); // Important - Avoid Leaks...hSource = FindResource(hInstance, lpszResourceName, ResourceType);if(hSource == NULL){HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;//MessageBoxEx(hWnd, "FindResource() Failed\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);return FALSE;}hGlobal = LoadResource(hInstance, hSource);if(hGlobal == NULL){HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;//MessageBoxEx(hWnd, "LoadResource() Failed\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);return(FALSE);}lpVoid = LockResource(hGlobal);if(lpVoid == NULL){HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;//MessageBoxEx(hWnd, "LockResource() Failed\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);return(FALSE);}nSize = (UINT)SizeofResource(hInstance, hSource);if(LoadPictureData((BYTE*)hGlobal, nSize)) bResult = TRUE;UnlockResource(hGlobal); // 16Bit Windows Needs ThisFreeResource(hGlobal); // 16Bit Windows Needs This (32Bit - Automatic Release)return(bResult);}//-----------------------------------------------------------------------------// Does: Open a File And Load It Into IPicture (Interface)// ~~~~ (.BMP .DIB .EMF .GIF .ICO .JPG .WMF)//// InPut: sFilePathName - Path And FileName Target To Save// ~~~~~ //// OutPut: TRUE If Succeeded...// ~~~~~~//-----------------------------------------------------------------------------BOOL CPicture::Load(CString sFilePathName)//============================================================================={//if(!PathFileExists(sFilePathName))return FALSE;BOOL bResult = FALSE;CFile PictureFile;CFileException e;int nSize = 0;if(m_pPict != NULL)UnloadPicture(); // Important - Avoid Leaks...if(PictureFile.Open(sFilePathName, CFile::modeRead | CFile::typeBinary, &e)){nSize = PictureFile.GetLength();BYTE* pBuffer = new BYTE[nSize];if(PictureFile.Read(pBuffer, nSize) > 0){if(LoadPictureData(pBuffer, nSize)) bResult = TRUE;}PictureFile.Close();delete [] pBuffer;}else // Open Failed...{//TCHAR szCause[255];//e.GetErrorMessage(szCause, 255, NULL);//HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;//MessageBoxEx(hWnd, szCause, ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);bResult = FALSE;}return(bResult);}//-----------------------------------------------------------------------------// Does: Read The Picture Data From a Source (File / Resource)// ~~~~ And Load It Into The Current IPicture Object In Use//// InPut: Buffer Of Data Source (File / Resource) And Its Size// ~~~~~ //// OutPut: Feed The IPicture Object With The Picture Data// ~~~~~~ (Use Draw Functions To Show It On a Device Context)// TRUE If Succeeded...//-----------------------------------------------------------------------------BOOL CPicture::LoadPictureData(BYTE *pBuffer, int nSize)//============================================================================={BOOL bResult = FALSE;HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, nSize);if(hGlobal == NULL){HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;//MessageBoxEx(hWnd, "Can not allocate enough memory\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);return(FALSE);}void* pData = GlobalLock(hGlobal);memcpy(pData, pBuffer, nSize);GlobalUnlock(hGlobal);IStream* pStream = NULL;if(CreateStreamOnHGlobal(hGlobal, TRUE, &pStream) == S_OK){HRESULT hr;if((hr = OleLoadPicture(pStream, nSize, FALSE, IID_IPicture, (LPVOID *)&m_pPict)) == E_NOINTERFACE){HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;//MessageBoxEx(hWnd, "IPicture interface is not supported\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);return(FALSE);}else // S_OK{pStream->Release();pStream = NULL;bResult = TRUE;}}FreeResource(hGlobal); // 16Bit Windows Needs This (32Bit - Automatic Release)return(bResult);}//-----------------------------------------------------------------------------// Does: Draw The Loaded Picture Direct To The Client DC// ~~~~//// Note: Bigger OR Smaller Dimentions Than The Original Picture Size// ~~~~ Will Draw The Picture Streached To Its New Given NEW Dimentions...//// InPut: pDC - Given DC To Draw On// ~~~~~ pSrcRect- Dimentions Of The Picture To Draw From(As a Rectangle)// DrawRect - Dimentions Of The Picture To Draw To(As a Rectangle)// OutPut: TRUE If Succeeded...// ~~~~~~//-----------------------------------------------------------------------------//=============================================================================void CPicture::Render(CDC* pDC, LPRECT pDrawRect, LPRECT pSrcRect/*=NULL*/,LPCRECT prcWBounds/*=NULL*/){ if (pDC == NULL || m_pPict == NULL) return ; CRect recrDest(pDrawRect); long Width = 0; long Height = 0; m_pPict->get_Width(&Width); m_pPict->get_Height(&Height);CRect SrcRect(0,0,Width,Height);if(pSrcRect){SrcRect=*pSrcRect;}CRect DrawRect(pDrawRect); HRESULT hrP = NULL; hrP = m_pPict->Render(pDC->m_hDC,DrawRect.left, // LeftDrawRect.top, // TopDrawRect.Width(), // RightDrawRect.Height(), // BottomSrcRect.left,SrcRect.Height(),SrcRect.Width(),-SrcRect.Height(),prcWBounds); if (SUCCEEDED(hrP)) return;AfxThrowMemoryException(); return;}//-----------------------------------------------------------------------------// Does: Saves The Picture That Is Stored In The IPicture Object As a Bitmap// ~~~~ (Converts From Any Known Picture Type To a Bitmap / Icon File)//// InPut: sFilePathName - Path And FileName Target To Save// ~~~~~//// OutPut: TRUE If Succeeded...// ~~~~~~//-----------------------------------------------------------------------------BOOL CPicture::SaveAsBitmap(CString sFilePathName)//============================================================================={BOOL bResult = FALSE;ILockBytes *Buffer = 0;IStorage *pStorage = 0;IStream *FileStream = 0;BYTE *BufferBytes;STATSTG BytesStatistics;DWORD OutData;long OutStream;CFile BitmapFile; CFileException e;double SkipFloat = 0;DWORD ByteSkip = 0;_ULARGE_INTEGER RealData;CreateILockBytesOnHGlobal(NULL, TRUE, &Buffer); // Create ILockBytes BufferHRESULT hr = ::StgCreateDocfileOnILockBytes(Buffer,STGM_SHARE_EXCLUSIVE | STGM_CREATE | STGM_READWRITE, 0, &pStorage);hr = pStorage->CreateStream(L"PICTURE",STGM_SHARE_EXCLUSIVE | STGM_CREATE | STGM_READWRITE, 0, 0, &FileStream);m_pPict->SaveAsFile(FileStream, TRUE, &OutStream); // Copy Data StreamFileStream->Release();pStorage->Release();Buffer->Flush(); // Get Statistics For Final Size Of Byte ArrayBuffer->Stat(&BytesStatistics, STATFLAG_NONAME);// Cut UnNeeded Data Coming From SaveAsFile() (Leave Only "Pure" Picture Data)SkipFloat = (double(OutStream) / 512); // Must Be In a 512 Blocks...if(SkipFloat > DWORD(SkipFloat)) ByteSkip = (DWORD)SkipFloat + 1;else ByteSkip = (DWORD)SkipFloat;ByteSkip = ByteSkip * 512; // Must Be In a 512 Blocks...// Find Difference Between The Two ValuesByteSkip = (DWORD)(BytesStatistics.cbSize.QuadPart - ByteSkip);// Allocate Only The "Pure" Picture DataRealData.LowPart = 0;RealData.HighPart = 0;RealData.QuadPart = ByteSkip;BufferBytes = (BYTE*)malloc(OutStream);if(BufferBytes == NULL){Buffer->Release();HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;//MessageBoxEx(hWnd, "Can not allocate enough memory\t", ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);}Buffer->ReadAt(RealData, BufferBytes, OutStream, &OutData);if(BitmapFile.Open(sFilePathName, CFile::typeBinary | CFile::modeCreate | CFile::modeWrite, &e)){BitmapFile.Write(BufferBytes, OutData);BitmapFile.Close();bResult = TRUE;}else // Write File Failed...{TCHAR szCause[255];e.GetErrorMessage(szCause, 255, NULL);HWND hWnd = AfxGetApp()->GetMainWnd()->m_hWnd;//MessageBoxEx(hWnd, szCause, ERROR_TITLE, MB_OK | MB_ICONSTOP, LANG_ENGLISH);bResult = FALSE;}Buffer->Release();free(BufferBytes);return(bResult);}LONG CPicture::get_Height(){LONG nHeight = 0;if (m_pPict != NULL){m_pPict->get_Height(&nHeight);}return nHeight;}LONG CPicture::get_Width(){LONG nWidth = 0;if (m_pPict != NULL){m_pPict->get_Width(&nWidth);}return nWidth;}
